:root{--bg-dark:#050510;--card:#ffffff08;--input-bg:#ffffff0d;--cyan:#00f3ff;--purple:#bc13fe;--text-main:#fff;--text-dim:#88a;--text-muted:#666;--border:#ffffff14;--accent:#a855f7;--font-main:"Inter",sans-serif;--font-mono:"JetBrains Mono",monospace}[data-theme=light]{--bg-dark:#e8edf5;--card:#fffffff2;--input-bg:#e8eef4;--text-main:#0f172a;--text-dim:#334155;--text-muted:#64748b;--border:#0000001f;--accent:#7c3aed;--cyan:#0e7490;--purple:#7c3aed}*,:before,:after{box-sizing:border-box}body{font-family:var(--font-main);background:var(--bg-dark);color:var(--text-main);margin:0;line-height:1.6}a{color:inherit;text-decoration:none}.dashboard-container{max-width:1600px;margin:0 auto;padding:0 1.5rem 2rem}.calc-hero{padding:2rem 0 1.5rem}.breadcrumb{color:var(--text-muted);margin-bottom:.75rem;font-size:.78rem}.breadcrumb a{color:var(--text-muted)}.breadcrumb a:hover{color:var(--accent)}.bc-sep{margin:0 6px}.calc-title{margin:0 0 .4rem;font-family:Plus Jakarta Sans,sans-serif;font-size:clamp(1.6rem,3vw,2.4rem);font-weight:800}.calc-subtitle{color:var(--text-dim);margin:0;font-size:1rem}.outer-tabs{background:#ffffff0a;border-radius:12px;flex-wrap:wrap;gap:4px;width:fit-content;margin-bottom:1.5rem;padding:4px;display:flex}[data-theme=light] .outer-tabs{background:#e8eef4}.outer-tab{color:var(--text-dim);cursor:pointer;white-space:nowrap;background:0 0;border:none;border-radius:8px;padding:8px 20px;font-size:.875rem;font-weight:500;transition:all .2s}.outer-tab.active{background:var(--accent);color:#fff;box-shadow:0 2px 8px #a855f74d}.outer-tab:hover:not(.active){color:var(--text-main);background:#ffffff0f}[data-theme=light] .outer-tab:hover:not(.active){background:#edf2f9}.tab-panel{display:none}.tab-panel.active{display:block}.calc-grid{grid-template-columns:1fr 1fr;gap:1.5rem;margin-bottom:1.5rem;display:grid}@media (width<=900px){.calc-grid{grid-template-columns:1fr}}.input-card,.result-card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:1.5rem}.input-card{border-left:3px solid var(--accent)}.result-card{border-left:3px solid var(--purple)}[data-theme=light] .input-card,[data-theme=light] .result-card{box-shadow:0 2px 12px #00000017}.card-title{align-items:center;gap:8px;margin:0 0 1.25rem;font-size:1rem;font-weight:600;display:flex}.input-group{margin-bottom:1.25rem}.input-group label{color:var(--text-dim);text-transform:uppercase;letter-spacing:.5px;margin-bottom:6px;font-size:.8rem;font-weight:600;display:block}.glass-input{border:1px solid var(--border);background:var(--input-bg);width:100%;color:var(--text-main);font-family:var(--font-main);border-radius:8px;outline:none;padding:10px 14px;font-size:.95rem;transition:border-color .2s}.glass-input:focus{border-color:var(--accent)}[data-theme=light] .glass-input{background:#e8eef4;border-color:#00000026}.input-with-adornment{position:relative}.input-with-adornment .glass-input{padding-right:52px}.adornment-right{color:var(--text-muted);pointer-events:none;font-size:.75rem;position:absolute;top:50%;right:12px;transform:translateY(-50%)}.dur-group{grid-template-columns:1fr 1fr;gap:10px;display:grid}.preset-grid{grid-template-columns:repeat(4,1fr);gap:6px;display:grid}@media (width<=700px){.preset-grid{grid-template-columns:repeat(2,1fr)}}.preset-card{border:1px solid var(--border);background:var(--input-bg);color:var(--text-dim);cursor:pointer;text-align:center;font-size:.72rem;line-height:1.3;font-family:var(--font-main);border-radius:8px;padding:8px 6px;transition:all .2s}.preset-card:hover,.preset-card.active{border-color:var(--accent);color:var(--accent);background:#a855f71a}.preset-card small{color:var(--text-muted);margin-top:1px;font-size:.63rem;display:block}[data-theme=light] .preset-card{background:#f0f4f9;border-color:#0000001f}[data-theme=light] .preset-card:hover,[data-theme=light] .preset-card.active{color:#7c3aed;background:#7c3aed1a;border-color:#7c3aed}.chip-row{flex-wrap:wrap;gap:6px;display:flex}.chip{border:1px solid var(--border);background:var(--input-bg);color:var(--text-dim);cursor:pointer;border-radius:20px;padding:6px 14px;font-size:.8rem;transition:all .2s}.chip:hover{border-color:var(--accent);color:var(--accent)}.chip.active{border-color:var(--accent);color:var(--accent);background:#a855f726}[data-theme=light] .chip{background:#f0f4f9;border-color:#0000001f}[data-theme=light] .chip.active{color:#7c3aed;background:#7c3aed1f;border-color:#7c3aed}.hero-result{text-align:center;margin:1rem 0 1.25rem}.hero-value{font-family:var(--font-mono);color:var(--accent);font-size:clamp(2rem,5vw,3rem);font-weight:700;line-height:1}.hero-label{color:var(--text-dim);margin-top:4px;font-size:.85rem}[data-theme=light] .hero-value{color:#7c3aed}.saved-bar-wrap{margin:10px 0 6px}.saved-bar-track{background:#ffffff14;border-radius:10px;height:6px;margin-bottom:4px;overflow:hidden}.saved-bar-fill{background:var(--accent);border-radius:10px;height:100%;transition:width .4s}.saved-bar-label{color:var(--text-muted);text-align:center;font-size:.72rem}.finish-callout{text-align:center;color:var(--accent);background:#a855f714;border:1px solid #a855f733;border-radius:8px;margin-top:8px;padding:7px 14px;font-size:.82rem;font-weight:600;display:none}[data-theme=light] .finish-callout{color:#7c3aed;background:#7c3aed12;border-color:#7c3aed33}.stat-grid{grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:1.25rem;display:grid}.stat-cell{border:1px solid var(--border);text-align:center;background:#ffffff08;border-radius:10px;padding:10px}.stat-val{font-family:var(--font-mono);color:var(--text-main);font-size:1rem;font-weight:700}.stat-lbl{color:var(--text-muted);margin-top:2px;font-size:.7rem}.formula-strip{flex-wrap:wrap;gap:8px;margin-bottom:1rem;display:flex}.formula-pill{color:var(--accent);font-family:var(--font-mono);background:#a855f71a;border:1px solid #a855f740;border-radius:20px;padding:5px 14px;font-size:.75rem}.alert-stack{flex-direction:column;gap:6px;margin-bottom:1rem;display:flex}.alert{border-radius:8px;align-items:flex-start;gap:8px;padding:8px 14px;font-size:.8rem;line-height:1.5;display:flex}.alert-info{color:var(--text-dim);background:#a855f71a;border:1px solid #a855f733}.alert-warn{color:#fbbf24;background:#fbbf241a;border:1px solid #fbbf2433}[data-theme=light] .alert-info{color:#4c1d95;background:#f5f3ff;border-color:#7c3aed33}[data-theme=light] .alert-warn{color:#92400e;background:#fffbeb;border-color:#fbbf244d}.action-bar{gap:8px;margin-top:1rem;display:flex}.action-btn{border:1px solid var(--border);background:var(--input-bg);color:var(--text-dim);cursor:pointer;border-radius:8px;flex:1;padding:9px;font-size:.8rem;transition:all .2s}.action-btn:hover{border-color:var(--accent);color:var(--accent)}[data-theme=light] .action-btn{background:#f0f4f9;border-color:#0000001f}.chart-outer{background:var(--card);border:1px solid var(--border);border-radius:16px;margin-bottom:1.5rem;padding:1.5rem}[data-theme=light] .chart-outer{background:#fffffff2;box-shadow:0 2px 12px #0000000f}.section-title{margin:0 0 1rem;font-size:.9rem;font-weight:600}.scenario-grid{grid-template-columns:repeat(4,1fr);gap:10px;margin-bottom:1.5rem;display:grid}@media (width<=600px){.scenario-grid{grid-template-columns:repeat(2,1fr)}}.scenario-card{border:1px solid var(--border);text-align:center;border-radius:12px;flex-direction:column;gap:4px;padding:1rem .75rem;transition:all .2s;display:flex}.sc-075,.sc-1{background:#ef44440a;border-color:#ef44444d}.sc-125,.sc-15{background:#a855f70f;border-color:#a855f74d}.sc-175,.sc-2{background:#10b9810d;border-color:#10b9814d}.sc-250,.sc-300{background:#fbbf240a;border-color:#fbbf244d}.scenario-card.sc-current{box-shadow:0 0 16px #a855f74d;border-color:var(--accent)!important;background:#a855f71f!important}[data-theme=light] .scenario-card.sc-current{box-shadow:0 0 16px #7c3aed2e}.sc-label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;font-size:.7rem;font-family:var(--font-mono)}.sc-time{font-family:var(--font-mono);color:var(--text-main);font-size:1.05rem;font-weight:700}.sc-delta{font-size:.7rem}.sc-delta-base{color:var(--text-muted)}.sc-delta-faster{color:#10b981}.sc-delta-slower{color:#ef4444}.sc-days{color:var(--text-muted);font-size:.68rem}[data-theme=light] .sc-075,[data-theme=light] .sc-1{background:#fff1f2;border-color:#ef444433}[data-theme=light] .sc-125,[data-theme=light] .sc-15{background:#f5f3ff;border-color:#7c3aed33}[data-theme=light] .sc-175,[data-theme=light] .sc-2{background:#f0fdf4;border-color:#10b98133}[data-theme=light] .sc-250,[data-theme=light] .sc-300{background:#fffbeb;border-color:#fbbf2440}.section-box{background:var(--card);border:1px solid var(--border);border-radius:16px;margin-bottom:1.5rem;padding:1.5rem}[data-theme=light] .section-box{background:#fffffff2;box-shadow:0 2px 12px #0000000f}.goal-result{color:var(--text-dim);background:#a855f712;border:1px solid #a855f726;border-radius:8px;padding:12px;font-size:.875rem;line-height:1.7}.data-table{border-collapse:collapse;width:100%;font-size:.85rem}.data-table th{color:var(--text-dim);text-transform:uppercase;text-align:left;background:#a855f71a;padding:10px 12px;font-size:.75rem}.data-table td{border-bottom:1px solid var(--border);color:var(--text-main);padding:9px 12px}.data-table tr:hover td{background:#ffffff05}[data-theme=light] .data-table td{border-color:#0000000f}.planner-header{margin-bottom:1.5rem}.planner-header h3{margin:0 0 .4rem;font-size:1.1rem;font-weight:700}.plan-subtitle{color:var(--text-dim);margin:0;font-size:.875rem}.goal-tracker{background:var(--card);border:1px solid var(--border);border-radius:12px;margin-bottom:1.25rem;padding:1rem 1.25rem}[data-theme=light] .goal-tracker{background:#fffffff2;box-shadow:0 1px 4px #0000000f}.goal-tracker-row{align-items:center;gap:12px;margin-bottom:.75rem;display:flex}.goal-tracker-label{color:var(--text-dim);text-transform:uppercase;letter-spacing:.4px;white-space:nowrap;font-size:.8rem;font-weight:600}.goal-bar-track{background:#ffffff14;border-radius:10px;height:8px;margin-bottom:5px;overflow:hidden}.goal-bar-fill{background:var(--accent);border-radius:10px;height:100%;transition:width .4s}.goal-bar-label{color:var(--text-muted);font-size:.75rem}.planner-add{flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:1.25rem;display:flex}.planner-add .glass-input{flex:1;min-width:100px}.btn-primary{background:var(--accent);color:#fff;cursor:pointer;white-space:nowrap;font-weight:600;font-family:var(--font-main);border:none;border-radius:8px;padding:10px 20px;font-size:.875rem;transition:opacity .2s}.btn-primary:hover{opacity:.85}.book-list{flex-direction:column;gap:8px;margin-bottom:1.5rem;display:flex}.book-item{background:var(--card);border:1px solid var(--border);border-radius:10px;justify-content:space-between;align-items:center;padding:12px 16px;display:flex}[data-theme=light] .book-item{background:#fffffff2;box-shadow:0 1px 4px #0000000f}.book-name{font-size:.9rem;font-weight:600}.book-meta{color:var(--text-muted);margin-top:2px;font-size:.72rem}.book-time{font-family:var(--font-mono);color:var(--accent);font-size:.85rem}.book-remove{color:var(--text-muted);cursor:pointer;background:0 0;border:none;padding:2px 6px;font-size:1rem;line-height:1;transition:color .2s}.book-remove:hover{color:#ef4444}.planner-summary{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:1.5rem}[data-theme=light] .planner-summary{background:#fffffff2;box-shadow:0 2px 12px #0000000f}.plan-stat-grid{grid-template-columns:repeat(4,1fr);gap:12px;display:grid}@media (width<=600px){.plan-stat-grid{grid-template-columns:repeat(2,1fr)}}.plan-stat{text-align:center;border:1px solid var(--border);background:#ffffff08;border-radius:10px;padding:12px}[data-theme=light] .plan-stat{background:#edf2f9}.plan-val{font-family:var(--font-mono);color:var(--accent);font-size:1.2rem;font-weight:700}.plan-lbl{color:var(--text-muted);margin-top:2px;font-size:.7rem}.page-sections-outer{max-width:1600px;margin:0 auto;padding:0 1.5rem 3rem}.section-h2{margin:0 0 1.25rem;font-family:Plus Jakarta Sans,sans-serif;font-size:1.4rem;font-weight:700}.how-section{margin-bottom:3rem}.how-steps{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1.25rem;display:grid}.how-step{background:var(--card);border:1px solid var(--border);border-radius:14px;align-items:flex-start;gap:16px;padding:1.25rem;display:flex}[data-theme=light] .how-step{background:#fff;box-shadow:0 1px 4px #0000000f}.step-num{background:var(--accent);color:#fff;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:32px;height:32px;font-size:.9rem;font-weight:700;display:flex}.step-body strong{margin-bottom:4px;display:block}.step-body p{color:var(--text-dim);margin:0;font-size:.85rem}.formula-pills2{margin-bottom:3rem}.pill-row{flex-wrap:wrap;gap:10px;display:flex}.fpill{color:var(--accent);font-family:var(--font-mono);background:#a855f71a;border:1px solid #a855f740;border-radius:30px;padding:8px 18px;font-size:.8rem}.speed-science-card{background:var(--card);border:1px solid #a855f733;border-radius:16px;margin-bottom:3rem;padding:2rem}.science-grid{grid-template-columns:repeat(3,1fr);gap:1.5rem;display:grid}@media (width<=700px){.science-grid{grid-template-columns:1fr}}.science-fact{text-align:center;padding:1rem}.fact-num{font-family:var(--font-mono);color:var(--accent);margin-bottom:.5rem;font-size:2.2rem;font-weight:700;line-height:1}.fact-text{color:var(--text-dim);font-size:.83rem;line-height:1.6}.faq-section{margin-bottom:3rem}.faq-list{flex-direction:column;display:flex}.faq-item{border-bottom:1px solid #ffffff0f}.faq-item__question{cursor:pointer;color:var(--text-main);user-select:none;justify-content:space-between;align-items:center;padding:14px 4px;font-size:.9rem;font-weight:600;list-style:none;transition:color .2s;display:flex}.faq-item__question::-webkit-details-marker{display:none}.faq-item__question:after{content:"+";font-family:var(--font-mono);color:var(--text-dim);flex-shrink:0;margin-left:16px;font-size:1.1rem;transition:color .2s}.faq-item[open] .faq-item__question:after{content:"−";color:var(--accent)}.faq-item__question:hover{color:var(--accent)}.faq-item__answer{color:var(--text-dim);padding:0 4px 14px;font-size:.85rem;line-height:1.75}[data-theme=light] .faq-list{gap:8px}[data-theme=light] .faq-item{background:#fff;border:1px solid #0000001a;border-radius:10px;transition:box-shadow .2s,border-color .2s;overflow:hidden;box-shadow:0 1px 4px #0000000f}[data-theme=light] .faq-item:hover{border-color:#7c3aed4d;box-shadow:0 2px 10px #7c3aed14}[data-theme=light] .faq-item[open]{border-color:#7c3aed66 #7c3aed66 #7c3aed66 #7c3aed;border-left-style:solid;border-left-width:3px;box-shadow:0 2px 12px #7c3aed1a}[data-theme=light] .faq-item__question{color:#0f172a;padding:14px 16px}[data-theme=light] .faq-item__question:after{color:#64748b}[data-theme=light] .faq-item[open] .faq-item__question:after,[data-theme=light] .faq-item__question:hover{color:#7c3aed}[data-theme=light] .faq-item__answer{color:#475569;border-top:1px solid #0000000f;padding:12px 16px 16px}.calc-related{margin-bottom:2rem}.related-grid{grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:10px;display:grid}.related-card{background:var(--card);border:1px solid var(--border);border-radius:10px;align-items:center;gap:10px;padding:12px 16px;font-size:.85rem;transition:all .2s;display:flex}.related-card:hover{border-color:var(--accent);background:#a855f70f}[data-theme=light] .related-card{background:#fff}.rel-icon{font-size:1.2rem}.calc-page-footer{border-top:1px solid var(--border);padding:2rem 0 1rem}.calc-page-footer__inner{max-width:1600px;margin:0 auto;padding:0 1.5rem}.calc-page-footer .footer-grid{grid-template-columns:2fr 1fr 1fr;gap:2rem;margin-bottom:2rem;display:grid}@media (width<=700px){.calc-page-footer .footer-grid{grid-template-columns:1fr 1fr}}.footer-logo{height:32px}.footer-brand-name{letter-spacing:1.5px;margin-top:6px;font-size:.85rem;font-weight:700;display:block}.footer-tagline{color:var(--text-muted);margin:4px 0 0;font-size:.78rem}.footer-col-title{text-transform:uppercase;letter-spacing:.5px;color:var(--text-muted);margin-bottom:8px;font-size:.75rem;display:block}.footer-link{color:var(--text-dim);margin-bottom:5px;font-size:.82rem;display:block}.footer-link:hover{color:var(--accent)}.footer-bottom{color:var(--text-muted);border-top:1px solid var(--border);padding-top:1rem;font-size:.75rem}.back-to-top{z-index:900;border:1px solid var(--border);background:var(--card);width:40px;height:40px;color:var(--text-dim);cursor:pointer;border-radius:50%;justify-content:center;align-items:center;font-size:1.1rem;transition:all .2s;display:none;position:fixed;bottom:24px;right:24px}.back-to-top:hover{border-color:var(--accent);color:var(--accent)}.back-to-top.visible{display:flex}.toast{z-index:9999;white-space:nowrap;border-radius:8px;padding:10px 20px;font-size:.875rem;animation:.3s fadeInUp;position:fixed;bottom:24px;left:50%;transform:translate(-50%)}.toast-success{color:#34d399;background:#1e293b;border:1px solid #10b98166}@keyframes fadeInUp{0%{opacity:0;transform:translate(-50%)translateY(10px)}to{opacity:1;transform:translate(-50%)translateY(0)}}[data-theme=light] body{color:#0f172a;background:#e8edf5}[data-theme=light] .dashboard-container{background:0 0}[data-theme=light] .breadcrumb a:hover{color:#7c3aed}[data-theme=light] .outer-tab.active{color:#fff;background:#7c3aed;box-shadow:0 2px 8px #7c3aed40}[data-theme=light] .input-card,[data-theme=light] .result-card{background:#fff;border-color:#0000001f #0000001f #0000001f #7c3aed;border-left-style:solid;border-left-width:3px;box-shadow:0 2px 12px #00000017}[data-theme=light] .glass-input{color:#0f172a;background:#edf2f9;border-color:#00000026}[data-theme=light] .glass-input:focus{border-color:#7c3aed}[data-theme=light] .glass-input::placeholder{color:#0006}[data-theme=light] input[type=date]::-webkit-calendar-picker-indicator{filter:none}[data-theme=light] .adornment-right{color:#64748b}[data-theme=light] .chip:hover{color:#7c3aed;border-color:#7c3aed}[data-theme=light] .hero-label{color:#334155}[data-theme=light] .saved-bar-track{background:#0000001a}[data-theme=light] .saved-bar-fill{background:#7c3aed}[data-theme=light] .saved-bar-label{color:#64748b}[data-theme=light] .stat-cell{background:#edf2f9;border-color:#0000001a}[data-theme=light] .stat-val{color:#0f172a}[data-theme=light] .stat-lbl{color:#64748b}[data-theme=light] .formula-pill{color:#7c3aed;background:#7c3aed1a;border-color:#7c3aed40}[data-theme=light] .action-btn{color:#334155;background:#f0f4f9;border-color:#0000001f}[data-theme=light] .action-btn:hover{color:#7c3aed;border-color:#7c3aed}[data-theme=light] .chart-outer{background:#fff;border-color:#0000001f;box-shadow:0 2px 12px #00000017}[data-theme=light] .section-title{color:#0f172a}[data-theme=light] .scenario-card{border-color:#0000001f}[data-theme=light] .scenario-card.sc-current{box-shadow:0 0 16px #7c3aed2e;background:#7c3aed14!important;border-color:#7c3aed!important}[data-theme=light] .sc-label{color:#64748b}[data-theme=light] .sc-time{color:#0f172a}[data-theme=light] .sc-delta-base{color:#64748b}[data-theme=light] .sc-delta-faster{color:#059669}[data-theme=light] .sc-delta-slower{color:#dc2626}[data-theme=light] .sc-days{color:#64748b}[data-theme=light] .section-box{background:#fff;border-color:#0000001f;box-shadow:0 2px 12px #00000017}[data-theme=light] .goal-result{color:#374151;background:#f5f3ff;border-color:#7c3aed26}[data-theme=light] .data-table th{color:#475569;background:#edf2f9}[data-theme=light] .data-table td{color:#0f172a;border-color:#0000000f}[data-theme=light] .data-table tr:hover td{background:#f8fafc}[data-theme=light] .planner-header h3{color:#0f172a}[data-theme=light] .plan-subtitle{color:#334155}[data-theme=light] .goal-tracker{background:#fff;border-color:#0000001f;box-shadow:0 1px 4px #0000000f}[data-theme=light] .goal-tracker-label{color:#334155}[data-theme=light] .goal-bar-track{background:#0000001a}[data-theme=light] .goal-bar-fill{background:#7c3aed}[data-theme=light] .goal-bar-label{color:#64748b}[data-theme=light] .btn-primary{color:#fff;background:#7c3aed}[data-theme=light] .btn-primary:hover{opacity:.85}[data-theme=light] .book-item{background:#fff;border-color:#0000001f;box-shadow:0 1px 4px #0000000f}[data-theme=light] .book-name{color:#0f172a}[data-theme=light] .book-meta{color:#64748b}[data-theme=light] .book-time{color:#7c3aed}[data-theme=light] .book-remove{color:#64748b}[data-theme=light] .book-remove:hover{color:#dc2626}[data-theme=light] .planner-summary{background:#fff;border-color:#0000001f;box-shadow:0 2px 12px #00000017}[data-theme=light] .plan-stat{background:#edf2f9;border-color:#0000001a}[data-theme=light] .plan-val{color:#7c3aed}[data-theme=light] .plan-lbl{color:#64748b}[data-theme=light] .page-sections-outer,[data-theme=light] .section-h2{color:#0f172a}[data-theme=light] .how-step{background:#fff;border-color:#0000001f;box-shadow:0 1px 4px #0000000f}[data-theme=light] .step-num{color:#fff;background:#7c3aed}[data-theme=light] .step-body strong{color:#0f172a}[data-theme=light] .step-body p{color:#334155}[data-theme=light] .fpill{color:#7c3aed;background:#7c3aed14;border-color:#7c3aed33}[data-theme=light] .speed-science-card{background:#fff;border-color:#7c3aed26;box-shadow:0 2px 12px #0000000f}[data-theme=light] .fact-num{color:#7c3aed}[data-theme=light] .fact-text{color:#334155}[data-theme=light] .related-card{background:#fff;border-color:#0000001f;box-shadow:0 1px 4px #0000000f}[data-theme=light] .related-card:hover{background:#f5f3ff;border-color:#7c3aed}[data-theme=light] .calc-page-footer{background:#f1f5f9;border-top-color:#0000001a}[data-theme=light] .footer-brand-name{color:#0f172a}[data-theme=light] .footer-tagline,[data-theme=light] .footer-col-title{color:#64748b}[data-theme=light] .footer-link{color:#334155}[data-theme=light] .footer-link:hover{color:#7c3aed}[data-theme=light] .footer-bottom{color:#64748b;border-top-color:#0000001a}[data-theme=light] .back-to-top{color:#334155;background:#fff;border-color:#0000001f;box-shadow:0 2px 8px #0000001a}[data-theme=light] .back-to-top:hover{color:#7c3aed;border-color:#7c3aed}[data-theme=light] .toast-success{color:#059669;background:#fff;border:1px solid #05966966;box-shadow:0 2px 12px #0000001a}[data-theme=light] ::-webkit-scrollbar-track{background:#e8edf5}[data-theme=light] ::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:4px}[data-theme=light] ::-webkit-scrollbar-thumb:hover{background:#94a3b8}.skip-link{position:absolute;left:-9999px}.skip-link:focus{position:static}